Carma Measurements of the Sunyaev-Zel'dovich Effect in Rx J1347.5–1145

Plagge, T.; Marrone, Daniel P.; Abdulla, Zubair; Bonamente, Massimiliano; Carlstrom, J. E.; Gralla, Megan; Greer, Christopher H.; Joy, M.; Lamb, James W.; Leitch, E. M.; Mantz, Adam; Muchovej, Stephen; Woody, D. P.

doi:10.1088/0004-637x/770/2/112

Cited by 38 publications

(51 citation statements)

References 29 publications

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“…Several previous studies have found similar evidence for compression along the line of sight in this cluster (e.g., Plagge et al 2013, and references therein). However, the compression we find in this study is less severe as in Plagge et al (2013).…”

Section: B5 Macs 1206 (Z=044)supporting

confidence: 80%

Galaxy Cluster Pressure Profiles as Determined by Sunyaev Zel’dovich Effect Observations with MUSTANG and Bolocam. II. Joint Analysis of 14 Clusters

Romero

Mason

Sayers

et al. 2017

ApJ

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We present pressure profiles of galaxy clusters determined from high-resolution Sunyaev-Zel'dovich (SZ) effect observations of 14 clusters, which span the redshift range of z 0.25 0.89 < <. The procedure simultaneously fits spherical cluster models to MUSTANG and Bolocam data. In this analysis, we adopt the generalized NFW parameterization of pressure profiles to produce our models. Our constraints on ensemble-average pressure profile parameters, in this study γ, C 500 , and P 0 , are consistent with those in previous studies, but for individual clusters we find discrepancies with the X-ray derived pressure profiles from the ACCEPT2 database. We investigate potential sources of these discrepancies, especially cluster geometry, electron temperature of the intracluster medium, and substructure. We find that the ensemble mean profile for all clusters in our sample is described by the parameters C P , , 0.3 , 1.3 , 8.6 500 0 0

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Section: B5 Macs 1206 (Z=044)supporting

confidence: 80%

Galaxy Cluster Pressure Profiles as Determined by Sunyaev Zel’dovich Effect Observations with MUSTANG and Bolocam. II. Joint Analysis of 14 Clusters

Romero

Mason

Sayers

et al. 2017

ApJ

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“…Allen et al 2002). It was discovered in the ROSAT X-ray all-sky survey (Voges et al 1999) and has been the object of many studies in X-ray (Schindler et al 1995(Schindler et al , 1997Allen et al 2002;Gitti & Schindler 2004, 2005Gitti et al 2007b,a;Ota et al 2008), optical (Cohen & Kneib 2002;Verdugo et al 2012), infrared (Zemcov et al 2007), tSZ (Pointecouteau et al 1999;Komatsu et al 1999Komatsu et al , 2001Pointecouteau et al 2001;Kitayama et al 2004;Mason et al 2010;Korngut et al 2011;Zemcov et al 2012;Plagge et al 2013), and multiwavelength analysis (Bradač et al 2008;Miranda et al 2008;Johnson et al 2012). From ROSAT X-ray observations, this cluster was thought to be a dynamically old relaxed cool-core cluster with an extremely strong cooling flow, due to its very spherical morphology and peaked X-ray profile (ROSAT; Schindler et al 1995Schindler et al , 1997.…”

Section: Previous Observations Of Rx J13475-1145mentioning

confidence: 99%

First observation of the thermal Sunyaev-Zel’dovich effect with kinetic inductance detectors

Adam

Comis

Macías-Pérez

et al. 2014

A&A

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Context. Clusters of galaxies provide valuable information on the evolution of the Universe and large scale structures. Recent cluster observations via the thermal Sunyaev-Zel'dovich (tSZ) effect have proven to be a powerful tool to detect and study them. In this context, high resolution tSZ observations (∼tens of arcsec) are of particular interest to probe intermediate and high redshift clusters. Aims. Observations of the tSZ effect will be carried out with the millimeter dual-band NIKA2 camera, based on kinetic inductance detectors (KIDs) to be installed at the IRAM 30-m telescope in 2015. To demonstrate the potential of such an instrument, we present tSZ observations with the NIKA camera prototype, consisting of two arrays of 132 and 224 detectors that observe at 140 and 240 GHz with a 18.5 and 12.5 arcsec angular resolution, respectively. Methods. The cluster RX J1347.5-1145 was observed simultaneously at 140 and 240 GHz. We used a spectral decorrelation technique to remove the atmospheric noise and obtain a map of the cluster at 140 GHz. The efficiency of this procedure has been characterized through realistic simulations of the observations. Results. The observed 140 GHz map presents a decrement at the cluster position consistent with the tSZ nature of the signal. We used this map to study the pressure distribution of the cluster by fitting a gNFW model to the data. Subtracting this model from the map, we confirm that RX J1347.5-1145 is an ongoing merger, which confirms and complements previous tSZ and X-ray observations. Conclusions. For the first time, we demonstrate the tSZ capability of KID based instruments. The NIKA2 camera with ∼5000 detectors and a 6.5 arcmin field of view will be well-suited for in-depth studies of the intra cluster medium in intermediate to high redshifts, which enables the characterization of recently detected clusters by the Planck satellite.

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“…The tSZ effect, which is largest on arcminute angular scales, has traditionally been studied either through observations of individual clusters -both pointed measurements [2][3][4][5] and recent detections in blind surveys [6][7][8] -or indirectly through its contribution to the CMB power spectrum [9,10].…”

Section: Introductionmentioning

confidence: 99%

Cosmological constraints from moments of the thermal Sunyaev-Zel’dovich effect

Hill

Sherwin

2013

Phys. Rev. D

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In this paper, we explain how moments of the thermal Sunyaev-Zel'dovich (tSZ) effect can constrain both cosmological parameters and the astrophysics of the intracluster medium (ICM). As the tSZ signal is strongly non-Gaussian, higher moments of tSZ maps contain useful information. We first calculate the dependence of the tSZ moments on cosmological parameters, finding that higher moments scale more steeply with σ8 and are sourced by more massive galaxy clusters. Taking advantage of the different dependence of the variance and skewness on cosmological and astrophysical parameters, we construct a statistic, | T 3 |/ T 2 1.4 , which cancels much of the dependence on cosmology (i.e., σ8) yet remains sensitive to the astrophysics of intracluster gas (in particular, to the gas fraction in low-mass clusters). Constraining the ICM astrophysics using this statistic could break the well-known degeneracy between cosmology and gas physics in tSZ measurements, allowing for tight constraints on cosmological parameters. Although detailed simulations will be needed to fully characterize the accuracy of this technique, we provide a first application to data from the Atacama Cosmology Telescope and the South Pole Telescope. We estimate that a Planck -like full-sky tSZ map could achieve a 1% constraint on σ8 and a 1σ error on the sum of the neutrino masses that is comparable to the existing lower bound from oscillation measurements.

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Carma Measurements of the Sunyaev-Zel'dovich Effect in Rx J1347.5–1145

Cited by 38 publications

References 29 publications

Galaxy Cluster Pressure Profiles as Determined by Sunyaev Zel’dovich Effect Observations with MUSTANG and Bolocam. II. Joint Analysis of 14 Clusters

Galaxy Cluster Pressure Profiles as Determined by Sunyaev Zel’dovich Effect Observations with MUSTANG and Bolocam. II. Joint Analysis of 14 Clusters

First observation of the thermal Sunyaev-Zel’dovich effect with kinetic inductance detectors

Cosmological constraints from moments of the thermal Sunyaev-Zel’dovich effect

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